Quadrature differential output six‐port rat‐race coupler | Zendy

Harada Michihiro | Zendy; Hayashi Hitoshi | Zendy

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Quadrature differential output six‐port rat‐race coupler

Author(s) -

Harada Michihiro,

Hayashi Hitoshi

Publication year - 2021

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

eISSN - 1350-911X

pISSN - 0013-5194

DOI - 10.1049/ell2.12145

Subject(s) - rat race coupler , hybrid coupler , stub (electronics) , insertion loss , bandwidth (computing) , magic tee , port (circuit theory) , quadrature (astronomy) , ranging , transmission line , physics , optics , electrical engineering , electronic engineering , power dividers and directional couplers , engineering , telecommunications

This letter describes a design method for a six‐port rat race circuit to obtain quadrature differential waveforms from a single end. The proposed six‐port rat‐race coupler succeeded in low insertion loss and wide bandwidth by using a 1/2 wavelength transmission line and an open stub. Over the frequency range from 0.89 to 1.05 GHz, a prototype 0.96‐GHz‐band six‐port rat‐race coupler was confirmed to have a transmission loss of 7.03 ± 0.45 dB, a reflection loss and isolation of 15 dB or more, and a phase error of within ± 3.3 ○ .

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